diff --git a/includes/installer/PostgresUpdater.php b/includes/installer/PostgresUpdater.php
index e8a1c80570c..dd07bc26c53 100644
--- a/includes/installer/PostgresUpdater.php
+++ b/includes/installer/PostgresUpdater.php
@@ -169,6 +169,7 @@ class PostgresUpdater extends DatabaseUpdater {
 				"INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('archive_ar_id_seq')" ),
 			array( 'addPgField', 'externallinks', 'el_id',
 				"INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('externallinks_el_id_seq')" ),
+			array( 'addPgField', 'uploadstash', 'us_props', "BYTEA" ),
 
 			# type changes
 			array( 'changeField', 'archive', 'ar_deleted', 'smallint', '' ),
diff --git a/includes/upload/UploadStash.php b/includes/upload/UploadStash.php
index 7db6c64b368..ea11737811f 100644
--- a/includes/upload/UploadStash.php
+++ b/includes/upload/UploadStash.php
@@ -260,7 +260,7 @@ class UploadStash {
 			'us_key' => $key,
 			'us_orig_path' => $path,
 			'us_path' => $stashPath, // virtual URL
-			'us_props' => serialize( $fileProps ),
+			'us_props' => $dbw->encodeBlob( serialize( $fileProps ) ),
 			'us_size' => $fileProps['size'],
 			'us_sha1' => $fileProps['sha1'],
 			'us_mime' => $fileProps['mime'],
diff --git a/maintenance/postgres/tables.sql b/maintenance/postgres/tables.sql
index d0d1e92de8b..37c8cf6f2f8 100644
--- a/maintenance/postgres/tables.sql
+++ b/maintenance/postgres/tables.sql
@@ -376,6 +376,7 @@ CREATE TABLE uploadstash (
   us_key          TEXT,
   us_orig_path    TEXT,
   us_path         TEXT,
+  us_props        BYTEA,
   us_source_type  TEXT,
   us_timestamp    TIMESTAMPTZ,
   us_status       TEXT,